Are the most well known annual, summer-flowering plants. They are native to South America and feature mid- to dark green, ovate to lance-shaped leaves, saucer- or trumpet- shaped, single or double, five-petalled flowers, summer to autumn. Grow in sunny, wind-sheltered sites, in humus-rich, moderately moist, well-drained soils. Plant in gardens and flowerpots. Typically and best planted in early spring.